mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 269

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

13.11.1 SCI Control Register 1
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Address:
Infrared Serial Communications Interface Module (IRSCI)
SCI control register 1:
LOOPS — Loop Mode Select Bit
ENSCI — Enable SCI Bit
Reset:
Read:
Write:
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This read/write bit enables loop mode operation for the SCI only. In
loop mode the RxD pin is disconnected from the SCI, and the
transmitter output goes into the receiver input. Both the transmitter
and the receiver must be enabled to use loop mode. The infrared
encoder/decoder is not in the loop. Reset clears the LOOPS bit.
This read/write bit enables the SCI and the SCI baud rate generator.
Clearing ENSCI sets the SCTE and TC bits in SCI status register 1
and disables transmitter interrupts. Reset clears the ENSCI bit.
1 = Loop mode enabled
0 = Normal operation enabled
1 = SCI enabled
0 = SCI disabled
Enables loop mode operation
Enables the SCI
Controls output polarity
Controls character length
Controls SCI wakeup method
Controls idle character detection
Enables parity function
Controls parity type
LOOPS
$0013
Bit 7
0
Figure 13-12. SCI Control Register 1 (SCC1)
ENSCI
6
0
Infrared Serial Communications Interface Module (IRSCI)
5
0
0
M
4
0
WAKE
3
0
ILTY
2
0
PEN
1
0
I/O Registers
Data Sheet
Bit 0
PTY
0
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